<template>
  <div :class="{fullscreen:fullscreen}" class="tinymce-container" :style="{width:containerWidth}">
    <textarea :id="tinymceId" class="tinymce-textarea"/>
    <div class="editor-custom-btn-container">
      <image-selector-dialog ref="imageSelector" multiple @save="getSelectedItems"></image-selector-dialog>
      <el-button icon="el-icon-upload" size="mini" type="primary" @click="openUploadPic()">upload</el-button>
    </div>
  </div>
</template>

<script>
/**
 * docs:
 * https://panjiachen.github.io/vue-element-admin-site/feature/component/rich-editor.html#tinymce
 */
import ImageSelectorDialog from "@/components/ImageSelectorDialog";
import plugins from "./plugins";
import toolbar from "./toolbar";

export default {
  name: "Tinymce",
  components: {
    "image-selector-dialog": ImageSelectorDialog
  },
  props: {
    id: {
      type: String,
      default: function() {
        return "vue-tinymce-" + +new Date() + ((Math.random() * 1000).toFixed(0) + "");
      }
    },
    value: {
      type: String,
      default: ""
    },
    toolbar: {
      type: Array,
      required: false,
      default() {
        return [];
      }
    },
    menubar: {
      type: String,
      default: "file edit insert view format table"
    },
    height: {
      type: [Number, String],
      required: false,
      default: 360
    },
    width: {
      type: [Number, String],
      required: false,
      default: "auto"
    }
  },
  data() {
    return {
      hasChange: false,
      hasInit: false,
      tinymceId: this.id,
      fullscreen: false,
      languageTypeList: {
        en: "en",
        "zh-Hans": "zh_CN",
        es: "es_MX",
        ja: "ja"
      }
    };
  },
  computed: {
    language() {
      return this.languageTypeList[this.$store.getters.language];
    },
    containerWidth() {
      const width = this.width;
      if (/^[\d]+(\.[\d]+)?$/.test(width)) {
        // matches `100`, `'100'`
        return `${width}px`;
      }
      return width;
    }
  },
  watch: {
    value(val) {
      if (!this.hasChange && this.hasInit) {
        this.$nextTick(() => window.tinymce.get(this.tinymceId).setContent(val || ""));
      }
    },
    language() {
      this.destroyTinymce();
      this.$nextTick(() => this.initTinymce());
    }
  },
  mounted() {
    this.initTinymce();
  },
  activated() {
    this.initTinymce();
  },
  deactivated() {
    this.destroyTinymce();
  },
  destroyed() {
    this.destroyTinymce();
  },
  methods: {
    initTinymce() {
      const _this = this;
      window.tinymce.init({
        language: this.language,
        selector: `#${this.tinymceId}`,
        height: this.height,
        body_class: "panel-body ",
        object_resizing: false,
        toolbar: this.toolbar.length > 0 ? this.toolbar : toolbar,
        menubar: this.menubar,
        plugins: plugins,
        end_container_on_empty_block: true,
        powerpaste_word_import: "clean",
        code_dialog_height: 450,
        code_dialog_width: 1000,
        advlist_bullet_styles: "square",
        advlist_number_styles: "default",
        imagetools_cors_hosts: ["www.tinymce.com", "codepen.io"],
        default_link_target: "_blank",
        link_title: false,
        nonbreaking_force_tab: true, // inserting nonbreaking space &nbsp; need Nonbreaking Space Plugin
        init_instance_callback: editor => {
          if (_this.value) {
            editor.setContent(_this.value);
          }
          _this.hasInit = true;
          editor.on("NodeChange Change KeyUp SetContent", () => {
            this.hasChange = true;
            this.$emit("input", editor.getContent());
          });
        },
        setup(editor) {
          editor.on("FullscreenStateChanged", e => {
            _this.fullscreen = e.state;
          });
        }
      });
    },
    destroyTinymce() {
      const tinymce = window.tinymce.get(this.tinymceId);
      if (this.fullscreen) {
        tinymce.execCommand("mceFullScreen");
      }

      if (tinymce) {
        tinymce.destroy();
      }
    },
    setContent(value) {
      window.tinymce.get(this.tinymceId).setContent(value);
    },
    getContent() {
      window.tinymce.get(this.tinymceId).getContent();
    },
    openUploadPic() {
      this.$refs["imageSelector"].open();
    },
    getSelectedItems(selectedItems) {
      if (selectedItems && selectedItems.length > 0) {
        const _this = this;
        selectedItems.forEach(v => {
          window.tinymce.get(_this.tinymceId).insertContent(`<img class="wscnph" src="${v.url}" >`);
        });
      }
    }
  }
};
</script>

<style scoped>
.tinymce-container {
  position: relative;
  line-height: normal;
}
.tinymce-container >>> .mce-fullscreen {
  z-index: 10000;
}
.tinymce-textarea {
  visibility: hidden;
  z-index: -1;
}
.editor-custom-btn-container {
  position: absolute;
  right: 4px;
  top: 4px;
  /*z-index: 2005;*/
}
.fullscreen .editor-custom-btn-container {
  z-index: 10000;
  position: fixed;
}
.editor-upload-btn {
  display: inline-block;
}
</style>
